Startseite Energiemanagement AC/DC- und DC/DC-Wandler (integrierter FET)

TPS61012

AKTIV

Synchroner Aufwärtswandler, niedrige Eingangsspannung, mit festem Ausgang von 1,8 V

Produktdetails

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Boost Type Converter Vin (min) (V) 0.8 Vin (max) (V) 1.8 Switching frequency (min) (kHz) 420 Switching frequency (max) (kHz) 780 Features Enable, Light Load Efficiency, Output discharge, Power good, Synchronous Rectification Vout (min) (V) 1.8 Vout (max) (V) 1.8 Iq (typ) (µA) 50 Duty cycle (max) (%) 100 Switch current limit (typ) (A) 0.56
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Boost Type Converter Vin (min) (V) 0.8 Vin (max) (V) 1.8 Switching frequency (min) (kHz) 420 Switching frequency (max) (kHz) 780 Features Enable, Light Load Efficiency, Output discharge, Power good, Synchronous Rectification Vout (min) (V) 1.8 Vout (max) (V) 1.8 Iq (typ) (µA) 50 Duty cycle (max) (%) 100 Switch current limit (typ) (A) 0.56
VSSOP (DGS) 10 14.7 mm² 3 x 4.9
  • Integrated Synchronous Rectifier for Highest
    Power Conversion Efficiency (> 95%)
  • Start-Up Into Full Load With Supply Voltages as
    Low as 0.9 V, Operating Down to 0.8 V
  • 200-mA Output Current From 0.9-V Supply
  • Powersave-Mode for Improved Efficiency at Low
    Output Currents
  • Autodischarge Allows to Discharge Output
    Capacitor During Shutdown
  • Device Quiescent Current Less Than 50 µA
  • Ease-of-Use Through Isolation of Load From
    Battery During Shutdown of Converter
  • Integrated Antiringing Switch Across Inductor
  • Integrated Low Battery Comparator
  • Micro-Small 10-Pin MSOP or 3 mm × 3 mm QFN
    Package
  • EVM Available (TPS6101xEVM-157)
  • Integrated Synchronous Rectifier for Highest
    Power Conversion Efficiency (> 95%)
  • Start-Up Into Full Load With Supply Voltages as
    Low as 0.9 V, Operating Down to 0.8 V
  • 200-mA Output Current From 0.9-V Supply
  • Powersave-Mode for Improved Efficiency at Low
    Output Currents
  • Autodischarge Allows to Discharge Output
    Capacitor During Shutdown
  • Device Quiescent Current Less Than 50 µA
  • Ease-of-Use Through Isolation of Load From
    Battery During Shutdown of Converter
  • Integrated Antiringing Switch Across Inductor
  • Integrated Low Battery Comparator
  • Micro-Small 10-Pin MSOP or 3 mm × 3 mm QFN
    Package
  • EVM Available (TPS6101xEVM-157)

The TPS6101x devices are boost converters intended for systems that are typically operated from a single- or dual-cell nickel-cadmium (NiCd), nickel-metal hydride (NiMH), or alkaline battery.

The converter output voltage can be adjusted from 1.5 V to a maximum of 3.3 V, by an external resistor divider or, is fixed internally on the chip. The devices provide an output current of 200 mA with a supply voltage of only 0.9 V. The converter starts up into a full load with a supply voltage of only 0.9 V and stays in operation with supply voltages down to 0.8 V.

The converter is based on a fixed frequency, current mode, pulse-width-modulation (PWM) controller that goes automatically into power save mode at light load. It uses a built-in synchronous rectifier, so, no external Schottky diode is required and the system efficiency is improved. The current through the switch is limited to a maximum value of 1300 mA. The converter can be disabled to minimize battery drain. During shutdown, the load is completely isolated from the battery.

An autodischarge function allows discharging the output capacitor during shutdown mode. This is especially useful when a microcontroller or memory is supplied, where residual voltage across the output capacitor can cause malfunction of the applications. When programming the ADEN-pin, the autodischarge function can be disabled. A low-EMI mode is implemented to reduce interference and radiated electromagnetic energy when the converter enters the discontinuous conduction mode. The device is packaged in the micro-small space saving 10-pin MSOP package. The TPS61010 is also available in a 3 mm × 3 mm 10-pin QFN package.

The TPS6101x devices are boost converters intended for systems that are typically operated from a single- or dual-cell nickel-cadmium (NiCd), nickel-metal hydride (NiMH), or alkaline battery.

The converter output voltage can be adjusted from 1.5 V to a maximum of 3.3 V, by an external resistor divider or, is fixed internally on the chip. The devices provide an output current of 200 mA with a supply voltage of only 0.9 V. The converter starts up into a full load with a supply voltage of only 0.9 V and stays in operation with supply voltages down to 0.8 V.

The converter is based on a fixed frequency, current mode, pulse-width-modulation (PWM) controller that goes automatically into power save mode at light load. It uses a built-in synchronous rectifier, so, no external Schottky diode is required and the system efficiency is improved. The current through the switch is limited to a maximum value of 1300 mA. The converter can be disabled to minimize battery drain. During shutdown, the load is completely isolated from the battery.

An autodischarge function allows discharging the output capacitor during shutdown mode. This is especially useful when a microcontroller or memory is supplied, where residual voltage across the output capacitor can cause malfunction of the applications. When programming the ADEN-pin, the autodischarge function can be disabled. A low-EMI mode is implemented to reduce interference and radiated electromagnetic energy when the converter enters the discontinuous conduction mode. The device is packaged in the micro-small space saving 10-pin MSOP package. The TPS61010 is also available in a 3 mm × 3 mm 10-pin QFN package.

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Technische Dokumentation

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Typ Titel Datum
* Data sheet TPS6101x High-Efficiency, 1-Cell and 2-Cell Boost Converters datasheet (Rev. F) PDF | HTML 04 Aug 2015
Application note Basic Calculation of a Boost Converter's Power Stage (Rev. D) PDF | HTML 28 Okt 2022
Application note Performing Accurate PFM Mode Efficiency Measurements (Rev. A) 11 Dez 2018
Application note Optimizing Transient Response of Internally Compensated DC-DC Converters (Rev. B) 29 Nov 2017
Application note Extending the Soft Start Time Without a Soft Start Pin (Rev. B) 15 Jun 2017
Application note Choosing an Appropriate Pull-up/Pull-down Resistor for Open Drain Outputs 19 Sep 2011
Analog Design Journal IQ: What it is, what it isn’t, and how to use it 17 Jun 2011
Application note Minimizing Ringing at the Switch Node of a Boost Converter 15 Sep 2006
More literature Seminar 400 Topic 1 - Current-Mode Control of Switching Power Supplies 15 Feb 2001

Design und Entwicklung

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